my dad said if I accidentally ate a watermelon seed, that a watermelon would grow inside of me.
Also when he didn't want the light on, or thought I didn't need it, he'd say "what? you're married to con edison?" and turn off the light
then one time these twins at school were in an otherwise empty classroom and talking and I said the same thing and turned off the lights
He's also into computers so he adapted some of the language. He'd say things like "stand by" which is an option for a
pc, that's similar to hibernate. But he'd say it to mean hold on a minute
He'd also say "sit on the table" instead of sit at the table. That's a language thing, haha.
It's hard to think of more unusual things because for me it's normal, lol.